Pleaseee HElpp!!!!!!!

The electric force between two charged vinyl balloons is 3.0 × 10-3 newtons. If the distance between them is 6.0 × 10-2 meters and the charge of one vinyl balloon is 3.3 × 10-8 coulombs, what is the charge on the other vinyl balloon? (k = 9.0 × 109 newton·meter2/coulombs2)

3.3 × 10-8 coulombs

3.6 × 10-6 coulombs

4.8 × 10-8 coulombs

6.0 × 10-8 coulombs

3.3 × 10-3 coulombs

Question

Pleaseee HElpp!!!!!!!

The electric force between two charged vinyl balloons is 3.0 × 10-3 newtons. If the distance between them is 6.0 × 10-2 meters and the charge of one vinyl balloon is 3.3 × 10-8 coulombs, what is the charge on the other vinyl balloon? (k = 9.0 × 109 newton·meter2/coulombs2)

3.3 × 10-8 coulombs

3.6 × 10-6 coulombs

4.8 × 10-8 coulombs

6.0 × 10-8 coulombs

3.3 × 10-3 coulombs

anonymous · Answer

Are there any equations you already which relate distance, force, and charge?

anonymous · Answer

already *know

anonymous · Answer

no

anonymous · Answer

The force is given as F= k*Q*q/(r^2) (where q is unknown)
Now F is known. 
Using that q= F*(r^2)/(k*q) Now put the values